JSON Smart Repair Engine

Smart AI Repair

Automatically fix trailing commas, single quotes, unquoted keys, Python dict literals, comments, and missing brackets.

Processed 100% locally in your browser

Tip: Upload broken .json files directly or paste stringified payloads to repair syntax instantly.

Broken / Malformed JSON

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Repaired Valid JSONRepaired Cleanly

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Online JSON Repair Engine & Syntax Fixer

Struggling with invalid JSON syntax errors? alpha-json Smart Repair Engine automatically detects and fixes broken JSON formatting, converting malformed payloads into strict RFC 8259 compliant JSON.

Fix Python Dict Literals

Automatically converts Python True, False, and None values into standard JSON true, false, and null.

Quote Keys & Single Quotes

Converts unquoted JavaScript keys (e.g. foo: 'bar') and replaces single quotes with double quotes.

Remove Comments & Trailing Commas

Strips single-line (//) and block (/* */) comments and trailing commas in arrays and objects.